Precise design of fluorescent molecules with desired properties has enabled the rapid development of many research fields. Among the different types of optically active materials, luminogens with aggregation-induced emission (AIEgens) have attracted significant interest over the past two decades. The negligible luminescence of AIEgens as a molecular species and high brightness in aggregate states distinguish them from conventional fluorescent dyes, which has galvanized efforts to bring AIEgens to a wide array of multidisciplinary applications. Herein, the useful principles and emerging structure-property relationships for precise molecular design toward AIEgens with desirable properties using concrete examples are revealed. The cutting-edge applications of AIEgens and their excellent performance in enabling new research directions in biomedical theranostics, optoelectronic devices, stimuli-responsive smart materials, and visualization of physical processes are also highlighted.

中文翻译：

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具有聚集诱导排放的高性能发光剂的精确分子设计。

具有所需特性的荧光分子的精确设计使得许多研究领域得以快速发展。在过去的二十年中，在不同类型的光学活性材料中，具有聚集诱导发射的发光剂（AIEgens）引起了人们的极大兴趣。作为分子种类的AIEgens的微不足道的发光和聚集态的高亮度使它们与传统的荧光染料区别开来，后者为使AIEgens进入多种多样的应用做出了巨大的努力。在此，通过具体的例子揭示了针对具有期望性质的AIEgens进行精确分子设计的有用原理和新兴的结构-性质关系。